I think avoiding smart people starting competitors by keeping them employed with high comps might be a good strategy for some of these cash rich and profitable companies. They might have been thinking of this as a good insurance.
This seems like a prima facie case for regulatory intervention to require divestment or breakup.
* I know, I know, 'how can we say it's bad, what if the resultant competition created environmental destruction or led to the invention of a basilisk.'